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Configuring Rate Limiting for the BGF

You can configure rate limiting for voice calls on the virtual BGF by setting default, minimum, and maximum values for properties defined in the H.248 traffic management package. The virtual BGF uses the default values unless the gateway controller overrides them with an H.248 command. You can configure maximum and minimum values if you want to limit the range of values accepted from the gateway controller. Parameters for the RTCP stream take effect only when the gate is an RTP/RTCP gate. You can configure peak and sustained data rates for the RTCP stream as a set rate or as a percentage of the corresponding RTP data rate.

The traffic management package is defined in Annex C of Gateway control protocol v3, ITU-T Recommendation H.248.53, — June 2008.

To configure rate limiting for the gate stream and the RTCP stream:

  1. Access the configuration of the H.248 traffic management properties.
    [edit services pgcp gateway bgf-1]user@host# edit h248-properties traffic-management
  2. Configure a peak data rate for all gate streams.
    [edit services pgcp gateway bgf-1 h248-properties traffic-management]user@host# set peak-data-rate default 3000000
  3. Configure the maximum acceptable peak data rate for all gate streams.
    [edit services pgcp gateway bgf-1 h248-properties traffic-management]user@host# set peak-data-rate maximum 3500000
  4. Configure the minimum acceptable peak data rate for all gate streams.
    [edit services pgcp gateway bgf-1 h248-properties traffic-management]user@host# set peak-data-rate minimum 2500000
  5. Configure a separate peak data rate for RTCP gate streams.
    [edit services pgcp gateway bgf-1 h248-properties traffic-management]user@host# set peak-data-rate rtcp fixed-value 100000
  6. Configure a sustained data rate for all gate streams.
    [edit services pgcp gateway bgf-1 h248-properties traffic-management]user@host# set sustained-data-rate default 2000000
  7. Configure the maximum acceptable sustained data rate for all gate streams.
    [edit services pgcp gateway bgf-1 h248-properties traffic-management]user@host# set sustained-data-rate maximum 2500000
  8. Configure the minimum acceptable sustained data rate for all gate streams.
    [edit services pgcp gateway bgf-1 h248-properties traffic-management]user@host# set sustained-data-rate minimum 1500000
  9. Optionally specify that RTCP bandwidth be included in the sustained data rate for all streams.
    [edit services pgcp gateway bgf-1 h248-properties traffic-management]user@host# set sustained-data-rate rtcp-include
  10. Configure a sustained data rate for RTCP gate streams.
    [edit services pgcp gateway bgf-1 h248-properties traffic-management]user@host# set sustained-data-rate rtcp fixed-value 200000
  11. Configure a maximum burst size for all gate streams.
    [edit services pgcp gateway bgf-1 h248-properties traffic-management]user@host# set max-burst-size default 3000000
  12. Configure the maximum acceptable maximum burst size for all gate streams.
    [edit services pgcp gateway bgf-1 h248-properties traffic-management]user@host# set max-burst-size maximum 3500000
  13. Configure the minimum acceptable maximum burst size for all gate streams.
    [edit services pgcp gateway bgf-1 h248-properties traffic-management]user@host# set max-burst-size minimum 2500000
  14. Configure a maximum burst size for RTCP gate streams.
    [edit services pgcp gateway bgf-1 h248-properties traffic-management]user@host# set max-burst-size rtcp percentage 1000

Published: 2010-04-13

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